[Leica] Deception Island

[leica at jayburleson.com (Jay Burleson)]

The inner caldera wall on Deception Island shows yellow pre-caldera 
pyroclastic rocks draped by red & grey clastogenic lavas.
Pyroclastic:formed by or involving fragmentation as a result of volcanic 
or igneous action.
The term "clastogenic" in volcanic eruptions refers to causing a 
particular type of ejecta.

Thanks for showing us the place - would have liked to have seen Neptunes 
Bellows.

Jay

On 2/19/2014 2:44 AM, Jayanand Govindaraj wrote:
> The first stop around the Antarctic peninsula was Deception Island, a
> very well known spot in the South Shetlands, and our first landfall
> below 60 degrees South. It is the blown out caldera of a volcano,
> which is still active to some extent, with a narrow channel called
> "Neptune's Bellows" leading to a large, circular, sheltered harbour.
> We stopped at a point called Telefon Bay for a short hike up to a view
> point and some scenery. Luckily, this was one of the few clear days
> with bright sunshine that we had in the whole trip. The minute I
> landed, the first thing I saw was a Chinstrap Penguin running along a
> beach full of kelp, next to very deep blue water, and the walls of the
> caldera as a backdrop. The ice tended to be grey because of all loose
> greyish brown volcanic soil blowing around everywhere.:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4642.jpg.html
>
> Suddenly, it swerved into the water, and was gone:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4685.jpg.html
>
> Walking on, a Crabeater Seal was asleep on the water's edge. Despite
> the name, these seals live on krill, and not crabs - they are thought
> to be the most numerous seals on the planet, but this was the only one
> we saw. It was fast asleep, but as I got near, it raised its head and
> had a look:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4758.jpg.html
>
> Then it yawned and went right back to sleep:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4796.jpg.html
>
> The rest of the photographs are of the landscape and details on the
> caldera. This one was from the zodiac, the ice forming a detail that
> looked like a flying saucer, and a two toned sea in the foreground::
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4918.jpg.html
>
> A typical landscape:
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4706.jpg.html
>
> Two looks at a small valley with a stream at the bottom:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4719.jpg.html
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4738.jpg.html
>
> Details on the caldera slopes, taken from the ship:
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4812.jpg.html
>
> http://gallery.leica-users.org/v/jayanand/antarctica/Antarctica_20140116_4827.jpg.html
>
> Please see LARGE
>
> Comments and criticism, as ever, welcome
>
> Cheers
> Jayanand
>
> _______________________________________________
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-- 
Jay,

Jay Burleson Gallery <http://jayburleson.com/leica/gallery/index.php/>
"Being a Leica customer is like dating the most beautiful girl in the 
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who cares more about herself than you... but, you keep calling her back 
anyway...
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